Hello, I have a CMAN 17.5 lawnmower and it will turn over but not stay started longer than a few seconds. I have put in a new battery, spark plug, cleaned all of the lines and changed the oil. I sprayed some ether in the carb and this gets the engined to turnover very briefly. I took of the fuel filter and the gas flows through (maybe it is the filter)? Seems like gas is not getting to the Carb. Any advice would be great.